From Software Companions:
ViewCompanion Pro is a very powerful application for viewing, printing and converting PLT plotter files, Adobe PDF, AutoDesk DWF, CGM, TIFF, CALS and other formats. Supported export formats includes Adobe PDF, AutoDesk DWF, AutoDesk DXF, CALS, CGM, Gerber RS-274X, HPGL/2, GIF, JPEG, PNG, SVG, TFF. With ViewCompanion Pro you can add markups to the loaded file. Supported markup elements include rectangles, lines, dimension lines, area measurements, ellipses, polygons, text, arrows, stamps and images. You can select one of the predefined stamps or create your own. Both batch conversion and printing is available. ViewCompanion has an extensive set of markup tools. Both batch conversion and printing is included. ViewCompanion can do precise measurement with snap to drawing geometry. User can choose to use a classic menu/toolbar based, or a modern ribbon based Interface.
What's new in this version:
Version 10.30: Page manager for deleting and adding pages. Support for PDF layers. Snap to drawing geometry while measuring PDF files. Added line point editing to annotations like lines, polylines, polygons, paths and areas. New report dialog where you may summarize all measurements, or a selection of these, and export to Excel (CSV).